Iceland Scallop Chlamys islandica
Publication of Advice: 7. June 2024. Published by Marine and Freshwater Research Institute.
Advice
MFRI advises in accordance with the MSY approach that catches in the fishing year 2024/2025 should be no more than 50 tonnes in Breiðasund and no more than 25 tonnes in Hvammsfjörður, and no fishing for scallop in other areas in Breiðafjörður should be allowed.
Stock development
MFRI cannot assess the stock and exploitation status relative to maximum sustainable yield (MSY) because reference points are undefined.
Iceland scallop. Total catches and the biomass survey indices on dredged grounds in Breiðasund and Hvammsfjörður 2014-2019, Flatey area and Látralönd in 2015-2019, and Bjarneyjar and Rúfeyjar 2016-2019.
Basis of the advice
| Advice basis | Precautionary approach |
|---|---|
| Management plan | There is no management plan for this stock |
| Assessment type | Trends in scallop biomass indicators |
| Input data | Survey biomass indices (camera survey) |
No new information on biomass of Iceland scallop in Breiðafjörður was available in the years 2022-2024, and an update of the ICES framework for category 3 stocks (ICES, 2021) could not be applied this year. The advice for 2024/2025 is to maintain the same TAC.
Iceland Scallop. Advice for Breiðasund in Breiðafjörður.
Catch advice for 2024/2025 | 50 t |
Precautionary reduction | not applied |
% Advice change | 0% |
Iceland Scallop. Advice for in Hvammsfjörður in Breiðafjörður.
Catch advice for 2024/2025 | 25 t |
Precautionary reduction | not applied |
% Advice change | 0% |
Quality of the Assessment
No new survey estimates were available in 2020-2024; therefore, there is no new information on the stock development.
A survey is planned for 2024.
Other information
Fishing ground for Iceland scallop in Breiðasund is defined with the following coordinates:
65°03,60ˈN, 022°43,50ˈW
65°07,10ˈN, 022°43,50ˈW
65°07,10ˈN, 022°31,50ˈW
65°03,60ˈN, 022°31,50ˈW
Fishing ground of Iceland scallop in Hvammsfjörður is defined with the following coordinates:
65°04,00ˈN, 022°21,00ˈW
65°07,00ˈN, 022°21,00ˈW
65°07,00ˈN, 022°12,00ˈW
65°04,00ˈN, 022°12,00ˈW
Iceland scallop. Recommended fishing grounds in Breiðafjörður.
Advice, TAC and catch
Iceland scallop. Recommended TAC, national TAC, area-specific TAC, Total catches and area-specific catches (tonnes).
Fishing year | Recommended TAC | National TAC | Breiðasund TAC | Hvammsfjörður TAC | Total Catches | Breiðasund Catches | Hvammsfjörður Catches |
|---|---|---|---|---|---|---|---|
2013/2014 | 0 | 0 | 0 | 0 | 15 * | ||
2014/2015 | 0 | 0 | 0 | 0 | 266 * | ||
2015/2016 | 0 | 0 | 0 | 0 | 634 * | ||
2016/2017 | 0 | 0 | 0 | 0 | 588 * | ||
2017/2018 | 0 | 0 | 0 | 0 | 942 * | ||
2018/2019 | 0 | 0 | 0 | 0 | 694 * | ||
2019/2020 | 0 | 0 | 0 | 0 | 451 * | ||
2020/2021 | 93 | 93 | 62 | 31 | 40 | 40 | |
2021/2022 | 93 | 93 | 62 | 31 | 50 | 50 | |
2022/2023 | 75 | 75 | 50 | 25 | 54 | 43 | 11 |
2023/2024 | 75 | 75 | 50 | 25 | |||
2024/2025 | 75 |
* Experimental fishing
References and further reading
ICES. 2021. Tenth Workshop on the Development of Quantitative Assessment Methodologies based on LIFE-history traits, exploitation characteristics, and other relevant parameters for data-limited stocks (WKLIFE X). ICES Scientific Reports. Report. https://doi.org/10.17895/ices.pub.5985
MFRI Assessment Reports 2023. Iceland scallop. Marine and Freshwater Research Institute, 9 June 2023.